空气动力学的

Base on the systematically geological investigation and study, we choose to use aremote sensing data source,the geography control data source(1:50,000relief map of Qiaojia and measured GPS ) as the data source of this research, adopt"Digital Landslide"processing image data, and carry on time-space analysiscombining geological investigation and related data. Application aerodynamicist theories, some important conclusions that obtained from the wind-tunnel experiment,and according to the time –space analysis result, we analyzed the landslide dammingmovement mechanism, presumed the movement format of this high-speed landslide,studied the formation mechanism and the movement characteristic of this landslide ,calculated it's movement equation, applied VC language to write calculationprocedure of each stage of the landslide, computed movement speed and displacement,and made sure its possible stop district.

本文在前人研究的基础上，选用遥感数据源、地理控制数据源(1：5万巧家幅地形图及实测GPS点)为本研究的数据源，采用"数字滑坡"技术处理图像数据，结合野外实地考察及相关资料对石膏地滑坡进行了时空分析；运用空气动力学理论，采用胡厚田等人在风洞实验中得出的许多重要结论，根据时空分析结果分析滑坡的运动机理，推测高速滑坡的运动模式；研究石膏地滑坡的形成机理、运动特征及运动方程，并用C++语言在VC开发环境中编写滑坡各阶段的计算程序，计算滑坡的流动速度及运动位移，确定其可能的停止区域。

All of the F1 call to be the Championship (Chinese:a class equation race car a world championship)of the FIAFormula World",.F1 and World Cup Soccer, Olympic sports games because of influence scope wide, popularity Gao, and be called "world three big sport, F1's race car is the most expensive in the world, speed most quick, science and technology content the tallest sport, included to regard aerodynamicist as principle, plus radio communication, electrical engineering...etc. in the world most the forerunner's technique is a lot of new science and technology can at the beginning practice on the F1.The F is a FORMULA abbreviation, namely equation;1 explanations include a lot, can comprehend for the top car hand, top-class game, cash award etc..

F1的全称是FIAFormula World Championship"(中文：一级方程式赛车世界锦标赛)，。F1 与世界杯足球赛，奥林匹克运动会因为影响范围广，知名度高，并称为"世界三大运动，F1赛车是世界上最昂贵、速度最快、科技含量最高的运动，包含了以空气动力学为主，加上无线电通讯、电气工程等世界上最先进的技术很多新的科技都是在F1上得以最初的实践的。F是FORMULA的缩写，即方程式；1的解释有很多，可以理解为顶尖车手，顶级赛事，奖金等等。

A measuring approach of pressure oscillation has been developed and experiments are conducted in a 10 liter two-dimension air-lift loop reactor. The experimental results show that the local mass transfer parameters have close relationship with the operating conditions, the structure of ALR and the properties of the reaction systems. A series of measurements of pressure pulse indicate that a gas distribution zone exists near the gas sparger, and in this zone the responding signals of pressure pulse are different with the signals measured in other parts of the reactor.

对不同结构的环流反应器的局部流体动力学和传质动力学特性进行了研究，利用压力传感器测量了空气-水、空气-NaCl水溶液、空气-Na〓SO〓水溶液、空气-葡萄糖水溶液和空气-乙醇水溶液五种体系，在不同气速下，不同位置的压力脉动信号，通过随机信号的数学分析，得到压力脉动信号的频谱特性，并依据压力脉动信号的频谱特性的分析给出环流反应器气体分布区的范围。

The advantageous aspects are: maximum aerodynamic penetration due to the driver's prone position; maximum exploitation of muscular output due to the antigravitational rotation of thighs; better venous and lymphatic circulation thanks to lower abdominal pressure; better cardio-respiratory function, due to easier venous circulation; maximum protection of the spine by supporting the rachis; minimum perineum shock thanks to the saddle supporting the gluteus; maximum stability of the vehicle thanks to ground-hub pedal block-system; reduced weight of the rotating parts thanks to the compactness of the mechanism of transmission.

这种自行车的优越之处在于：由于骑车者的俯伏位置而得到的最佳空气动力学性能；由于大腿的反重力旋转而获得的对肌肉的最佳利用；由于较低的腹部压力而获得的更佳的静脉和淋巴循环效果；由于更加便利的静脉循环而带来的更佳的心血管循环系统；由于对脊椎的支撑而带来的对脊柱的最佳保护效果；由于座鞍对臀部的支撑而获得的对会阴的最小冲击；由于地面-轮毂踏板系统（ground-hub pedal-block-system）而获得的车体的最大的稳定性；由于传动系统的紧凑性而减小了车身重量。

On the basis of summarizing the application of the Penman-Monteith model in forest underlying surface, the evaluating method and significance of many parameters were expounded. The calculating methods of the key parameters were discussed including net radiation, aerodynamics resistance and canopy layer stomatic resistance, some problems were analyzed and some suggestions were given for practical application of this model in forest evaportranspiration research.

中文摘要： Penman—Monteith公式是在蒸散研究中应用最多，也是变化形式最多的方法，该文在对目前Penman—Monteith模型在森林下垫面中应用总结的基础上，阐述了其中众多参数的意义和常用的确定方法，着重探讨了影响该模型精确性的关键因子净辐射、空气动力学阻力和冠层阻力的计算方法，并分析了Penman—Monteith模型在实际应用中存在的一些问题，提出了该模型在今后森林蒸散研究中发展的思路。

By regression of experimental data, therules of the linkage between these factors, which will provide a theoretical basis for designing BBP with different scales.3 Using thermal analysis technology and dynamic thermogravimetry, the paper studies combustion kinetic characteristics of 3 types of agricultural crops at different rate of temperature rise, and thus, achieved dynamic parameters of these fuels at different rate of temperature, established dynamic model of straw combustion, which reflects the dynamic process in the fast combustion area.4 Characteristics of straw briquette combustion was experimented, focusing on the impact of straw type, temperature, air supply, and density, diameter, and weight of briquette on the combustion speed, and the following conclusions were drawn:(1) combustion of straw briquette fuel is static permeation diffusion combustion;(2) temperature has a larger impact on the speed of straw briquette combustion than air supply; the higher the combustion temperature is, the faster volatilizable component separates out, and the less steady the combustion is;(3) density of briquette fuel has impact on the speed of volatilizable component separation and therefore the combustion speed;(4) increase of diameter and weight of briquette fuel increases the average combustion speed in the initial stage, and that in the later stages is comparatively steady;(5) the proportion of volatilizable component in straw briquette fuel is high, therefore, the temperature control during combustion under the rational ventilation condition is essential to ensure its safe combustion.5 Using the above-mentioned results of experiments and theoretical analysis, and based on thought of hydraulic driven and bi-direction compression, the hydraulic system and compression parts of the HBP BBP are re-designed in terms of industrialization.

利用热分析技术，采用动态热重实验法，对我国的三大农作物秸秆在不同升温速率下的燃烧动力学特性进行了较系统的研究。得到了各原料在不同升温速率下的动力学参数；建立了秸秆燃烧的动力学模型，该模型反映了秸秆迅速燃烧区的动力学过程。 4 对秸秆成型燃料的燃烧特性进行了试验研究。着重研究了秸秆河南农业大学博士学位论文巫的种类、温度、空气供给量、成型燃料密度、直径、质量对成型燃料燃烧速度的影响并得出如下主要结论：①秸秆成型燃料的燃烧方式属于静态渗透式扩散燃烧。②秸秆成型燃料燃烧速度受温度的影响大于通风量燃烧速度的影响：燃烧温度越高，挥发分析出速度越快，燃烧平稳性愈差。③成型燃料密度影响成型燃料挥发分的析出速度，影响燃烧速度。④成型燃料直径和质量的增加，使得燃烧初期的平均燃烧速度增大，中后期的平均燃烧速度相对平稳。⑤秸秆成型燃料含挥发分比例高，因此合理配风下的控温燃烧是保证其完全燃烧的关键。 5运用已取得的试验和理论分析结果，以液压驱动、双向成型为基础，从产业化的角度对HBP型成型机进行了液压系统和成型部件的改进设计；同时采用了二级预压机构，使该成型机的生产率达到 500kg.hd；单位能耗 60kwh。上'左右，磨损件修复周期 300小时左右，基本解决了影响生物质固化技术在国内推广的技术难题。

Applying finite element method,the dynamic characteristics of drill string with cone bit in straight hole were simulated,and the whirl,deformation and the dynamic stress in air drilling were compared with the ones in drilling fluid drilling .

应用有限元方法，仿真了空气钻井时斜直井眼中带牙轮钻头钻柱的动力学特性，比较了空气钻井和钻井液钻井条件下钻柱的涡动、变形以及动态应力状况，探讨了空气钻井钻柱失效的动力学机理。

Active front grille, with grille louvers that open when the fuel cell stack requires coolingFull underbody aerodynamic coverLeft- and right-hand charging ports incorporated in stylish front fender ventsFlush door handles that feature push-to-release operationWind tunnel-shaped outside mirrors with integral turn signalsCenter high-mounted rear stop lamp incorporated into full-width, wraparound spoiler Signature vertical taillamps with subtle fin designSide glass mounted flush with pillarsWheels with clear-covered space between the spokes, creating a sleeker profile while maintaining Cadillac's signature bold wheel designLow-drag roof rack

前格栅与主动，开放时，燃料电池堆格栅百叶，需要coolingFull底部的空气动力学coverLeft和右手收费港口时尚大门前面的挡泥板ventsFlush纳入句柄功能一键释放operationWind隧道形外后视镜带有整体式转signalsCenter高置后刹车灯全面宽度，重叠扰流签名微妙的鱼翅designSide玻璃垂直尾灯内安装有明确的覆盖轮辐之间的空间pillarsWheels刷新，创造了光亮的表面，同时保持凯迪拉克的签名大胆的轮designLow拖动屋顶机架

"The shape of the 9X is right for a car of this size, and the longer roof line helps the aerodynamics as well as providing more rear headroom and interior space."

&形状的9X的是正确的汽车这种规模的，长远的屋顶路线，有利于空气动力学，以及提供更多的后方余量和室内空间&。

If the missile is not at least as fast and aerodynamically nimble as the targeted jetfighter, then it cannot hit its target.

如果这枚导弹的速度没有那架飞机快，或者它的空气动力学方面的敏捷程度比不上那架被当成是靶子的飞机，那它肯定是打不中的。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。